Rotary engine.



'PATENTED APR. 16, 1907.

G. A. WHITMAN. ROTARY ENGINE.

APPLIOATIQN FILED MAR. 20, 1906.

UNITED STATES T- OFFICE.

GUY A. WHITMAN, OF GREENLAND, MICHIGAN.

ROTARY ENGINE.

Specification of Letters Patent.

Patented April 16, 1907.

Application'filed March 20, 1906. Serial No. 306,963.

useful Improvement in .Rotary Engines, of

- which the following is a specification.

' My invention relates to a new and useful permit the steam entering the cylinder to act directly u on the blades of the piston by low said blades and be exhausted into a passage from which it will again emerge andenter upon the blades before being finally exhausted.

A furtherobject of my invention is to rovide a diaphragm which will prevent the ow of the steam in the wrong direction.

With these ends in view this invention impact and t en folconsists in the details of construction and combination of elements hereinafter set forth and then specifical'y designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and 0 scribed in detail, re erring to the accompanying drawings, forming a part of this specification, in which Figure 1 is a vertical section of an engine made-in accordance with my improvement; Fig. 2, a detail perspective of one of the blades, illustrating the arrangement of a spring-actuated packing-block adapted to fit against and travel upon the inner surface of the cylinder when the piston is revolving.

In carrying out my invention .as here embodied, A represents a cylinder which is cir is fitted the pistonB, the latter being secured upon a suitable shaft C, having its bearings in the'heads cular in shape and in which of the piston, said bearings here not shown.

steam past the blades,

This piston has a series of blades D formed upon its periphery, so as to produce the 'ockets E for the reception of'the steam, an each of these blades may have a recess formed therein for the reception of the packing-block F, which latter is normally forced outward by means of the spring G, so as to cause. the

outer surface of the block to bear against-the inner surface of the cylinder and travel thereon as. the piston revolves. This .ar-

rangement 'will prevent the undue escape of eration will now be dethus not only pernnti ting the engine to act from f reaching the final exhaust J, through which it will escape.

In order to. avoid the rotation of piston in the wrong direction, a partition L is pivoted at M, the heel end thereof extendinginto the pocket N formed by the ofl'set K. A suitable spring 0 is" located in this pocket and bears against the heel end of the partition, so as to cause theflatter to-normally spring outline upon the rear side of the blades, thuseffectually packingthe piston at this oint and servlng as a wall against which tie steam may react. As the piston revolves the partition maybe swung downward to permiteach blade to pass and again spring inward, as before described.

By this construction an exceedingly simple and eflective engine is produced, which will utilize the impact of the steam entering the cylinder and also utilize the expansion there- 'of for driving the piston and when the steam escapes to-the primary exhaust again utilize this steam after the manner of a combined engine.

Having thus fully described myin vention, what I claimas' new and useful is- In a rotary I engine, a cylinder, a piston fitted to revolve therein, blades formed upon I the periphery of the piston, spring-actuated packing-blocks fitted in each wing, aprimary exhaust for conveying the steam irom the pockets of the'blades at a certain-point to the pockets of the blades at another point, and a e blades and exten 'scribing'witnesses. GUY A.-WHITMA;N. Witnesses:

' R. J.-TowNsENn',,.

Josnrn R. MCCLOUOH.

spring-actuated partition contacting with' t In testimony whereof I have hereunto afed my signature in the p'resenc'e of'two sub- I ward and come in contact with the straight 

